1. Metallic 1T/1T′ phase TMD nanosheets with enhanced chemisorption sites for ultrahigh-efficiency lead removal
- Author
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Liang Mei, Mingzi Sun, Ruijie Yang, Yaqin Zhang, Yuefeng Zhang, Zhen Zhang, Long Zheng, Ye Chen, Qinghua Zhang, Jiang Zhou, Ye Zhu, Kenneth M. Y. Leung, Wenjun Zhang, Jun Fan, Bolong Huang, Xiao Cheng Zeng, Hyeon Suk Shin, Chuyang Y. Tang, Lin Gu, Damien Voiry, and Zhiyuan Zeng
- Subjects
Science - Abstract
Abstract Two-dimensional (2D) materials, as adsorbents, have garnered great attention in removing heavy metal ions (HMIs) from drinking water due to their extensive exposed adsorption sites. Nevertheless, there remains a paucity of experimental research to remarkably unlock their adsorption capabilities and fully elucidate their adsorption mechanisms. In this work, exceptional lead ion (Pb2+) (a common HMI) removal capacity (up to 758 mg g−1) is achieved using our synthesized metallic 1T/1T′ phase 2D transition metal dichalcogenide (TMD, including MoS2, WS2, TaS2, and TiS2) nanosheets, which hold tremendous activated S chemisorption sites. The residual Pb2+ concentration can be reduced from 2 mg L−1 to 2 μg L−1 within 0.5 min, meeting the drinking water standards following World Health Organization guideline (Pb2+ concentrations
- Published
- 2024
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